Zitat von jeroompje im Beitrag #17one can do a normal win 8 raid-0 install (efi) or an uefi install.does the upgrade of the sata-driver in the raid orom have influence on both installations?

If you do a "LEGACY mode" (non-UEFI) Win8 installation, just the Intel RAID ROM will be used by the system, wheras the OS, which has been installed in "UEFI mode", only will use the BIOS module named SataDriver.Both BIOS modules (Intel RAID ROM and Intel SataDriver) do not infuence each other, only one of them will work.

My opinion: Neither the Intel RAID ROM resp SataDriver nor the Intel RAID driver version, but the Sandforce Controller of your Corsair Force GT SSDs are responsable for the failure of the TRIM tests done with your Z87 RAID0 system.The only question is, if they really don't let the TRIM commands into the SSDs or if the TRIM activity cannot be detected by the usual methods (TRIMCheck Tool or manual Hex Editor test).

My tip: Contact the ASUS, Intel and Corsair Support. One of these Companies should be able to solve your problem.Maybe you need just an updated mainboard BIOS, a new RAID ROM/SataDriver module or a better Sandforce Controller Firmware.